>
>Subject: Re: PDP-8 /e/f/m memory
> From: Don <THX1138 at dakotacom.net>
> Date: Wed, 16 Aug 2006 11:00:57 -0700
> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>
>Allison wrote:
>>
>> What has this to to do with the topic at hand?
>
>If people are griping about the *possibility* of a battery
>leaking inside their gear, I contend that if you're storing
>that gear in conditions that would bring about this sort
>of problem (e.g., excessive ambient temperatures, humidity)
>then there are bound to be *other* things that are happening
>to that gear besides the potential of a battery leak.
Different topic and worth discussion.
I attack it from a different view. I assume batteries will
discharge when least desired in storage and will leak.
All my PCs that have CMOS batteries accessable have a external
(.6x2x1.5 inches) plastic box with a suitable battery placed
in it and wires to the internal battery location. I had a
bad experience early on with NiCd leakage on a board so off
the board they go. External makes for accessability without
opening the cases. It also allows me to use a battery that
is larger or better that would not fit where the orginal was.
I apply this to a my otehr systems as well, S100 toy clock
battery, MicrovaxII TOY clock battery and similar.
I agree heat and batteries generally do not get along well
and storing equipment with batteries installed is also risky.
Allison
The Toledo craigslist just posted the following for free:
- An SGI Indy with its giant, heavy monitor.
- An HP PA-RISC Pizza box machine with its heavier-than-the-Indy's
monitor.
I am not interested, but I could help someone else get them.
--
Paul R. Santa-Maria
Temperance, Michigan USA
> Firstly, this is, as I am sure you agree, not a list to provide answers
> to members questions.
Thank you for the clarification. This will save me a great deal of time in
the future not researching answers to questions.
If this list is meant to be just another wank like alt.folklore.computers,
enjoy the noise.
I am in the process of doing a major downsize in the collection. Most of what I
am getting rid of will be posted on the Vintage Computer Marketplace, probably
at the rate of 5 - 10 items per day. The URL of the Vintage Computer Marketplace
is:
http://www.vintagecomputermarketplace.com/
My real interests are in the pre 1981 era although I will be keeping a few
interesting later machines from the early 80's. What I intend to concentrate on
are the Polymorphic and Lobo Drives computers since they were made here in Santa
Barbara, and I still have enough contacts to find people who used to work there.
And of course, I'll still be working with anything *I* find interesting :).
Great News !!!!
I have received enough in donations to pay for the KS/NE trip next month on
Sept 8th. I now need just 135 more people to donate $10 or whatever amount
they can from $1 to $$$ book the GA trip to rescue those items. Remember
your donation is tax deducible and is for a great cause. Thanks to everyone
that donated to make the KS/NE trip a go. I will get lots of pictures and
hope the drive back will be smooth. Read more about the two trips at
www.houstoncomputermuseum.org
Got a few of my numbers backwards- the boards are in reality
An PDP-11/03 processor, LSI-11 quad-height M7264EB (does anything go out over the C/D fingers, or are
they just there for stability?)
DHV11-A 8-line async serial
RXV11 (forgot the V originally...)
either MSV11-B 4k RAM or MSV11-PL 256K ram (18-bit, but will the LSI-11 just ignore the extra or will it futz up?)
Am I getting in too deep for a first-go at a PDP-11? These were offered in trade for a scope, and I don't have any
other PDP stuff (it would timeshare a VAX 4200 chassis with the VAX, with a very advanced "card-pull" scheduler to
prevent conflicts).
Scott
I've started a new wiki on the Wikia Scratchpad about the exploration
of computer history through emulation and my first digital "victim" is
the PDP-8. I have the outline of a basic PDP-8 (OS/8) in SIMH started,
but I still need to flesh it out. I'll probably write my basic OS/8
tutorial tommorow, but input from more experienced fans would be
welcome. Various articles (any red link) need to be written and while
I plan on wrting most of them if need be, help from the community
would be much appreciated. Just remember that your audience is
presumably going to be curious newbies, not "old hands" who just need
a little reminder. That said I look forward to your comments and
contributions.
Main Wiki Page: http://scratchpad.wikia.com/wiki/Computer_History_Exploration
PDP-8 Article: http://scratchpad.wikia.com/wiki/PDP-8
Michael "Madcrow" K.
Hi Steve, i'm located in Germany, an i was responsible for INTEL from 1980
to 1986
at an Distributor.
I found your ISIS-II stuff, when i'm looking for an CrossAsm for Mostek
MK3870.
If you need something i've a lot of original INTEL Software for ISIS-II and
ISIS-III,
and also Literature - feel free to ask me
I read you have disassembled ISIS-II, - i'm interested in the source code.
Also i'm looking for an XASM running on ISIS-II for MOSTEK MK3870 an
Single Chip Controller based on the FAIRCHILD F8.
Greetings from Germany
Walter
I have the opporitunity of getting some LSI 11/2 boards (LSI 11/2 processor, some memory, serial MUX, RK floppy driver) (I think)
Couple questions: will the multiport serial work for a console or do I need a specific "console" card?
Will these boards work in a VAX 4k BA430 chassis/backplane, or will the C/D wiring and DSSI over C/D throw them off?
Just figured I'd post this out here... I have a collection of old Apollo DN
systems (3000,3010,3500,4000,4500,5500 I think sums it up) I did a little
work on porting NetBSD to and then have just never had the time to pursue.
Might be willing to part with them to someone in the New England area, since I
have monitors with some of them, and OS tapes, spare hard drives, etc.
Anyone interested, feel free to contact me... really not up for shipping
monitors around, but for someone fairly local with interest I might be willing
to do a road trip.
email reply, or to: phufnagel at snet.net
-- Pete
